GitHub user davebshow opened a pull request:

    https://github.com/apache/tinkerpop/pull/515

    TINKERPOP-1581 Gremlin-Python driver connection is not thread safe.

    https://issues.apache.org/jira/browse/TINKERPOP-1581
    
    This was a simple fix. The `DriverRemoteConnection.__init__` method no 
longer ignores the `loop` kwarg passed by user. I added two tests using threads 
as well. One demonstrates how not passing an `IOLoop`, which was in effect the 
behavior before this PR, will cause a `RuntimeError`. The other shows how you 
can now pass an `IOLoop` for each thread to avoid this problem.

You can merge this pull request into a Git repository by running:

    $ git pull https://github.com/apache/tinkerpop TINKERPOP-1581

Alternatively you can review and apply these changes as the patch at:

    https://github.com/apache/tinkerpop/pull/515.patch

To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:

    This closes #515
    
----
commit 2f3386daed8323b77aa48ed92335f353d09d06c1
Author: davebshow <[email protected]>
Date:   2016-12-09T21:40:53Z

    allow user to pass loop to DriverRemoteConnection. added multi-threaded 
tests.

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